:arrow_up: Update rollup-plugin-typescript2 requirement to ^0.15.0
:arrow_up: Update rollup-plugin-typescript2 requirement to ^0.15.0

Updates the requirements on [rollup-plugin-typescript2](https://github.com/ezolenko/rollup-plugin-typescript2) to permit the latest version.
- [Release notes](https://github.com/ezolenko/rollup-plugin-typescript2/releases)
- [Commits](https://github.com/ezolenko/rollup-plugin-typescript2/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
nuintun/portal,nuintun/portal,nuintun/portal